Festool Tabless Battery Pack Energy Set SYS 18V 4xTBX4/TCL6DUO (578946)

Festool Tabless Battery Pack Energy Set SYS 18V 4xTBX4/TCL6DUO (578946)

The power supply for your 18V cordless tools.

The energy systainer is the ideal addition to your Festool cordless tools and provides you with the power you need. The set contains four batteries and a charger - all neatly stowed away in the Systainer³.

The TBX 4 Battery introduces Festool’s latest tabless cell technology, delivering higher power output, cooler operation, and longer service life—without added weight. By eliminating traditional cell tabs, energy flows more efficiently through the battery, reducing heat buildup while improving power delivery, runtime, and charging speed. The result is stronger, more consistent performance for demanding applications, with less stress on the battery over time. Paired with Festool’s AIRSTREAM charging system, the TBX 4 battery is actively cooled before and during charging when used with the AIRSTREAM SCA 16 quick charger. This active cooling allows the battery to recharge faster and return to work sooner—ideal for professionals who rely on continuous productivity. The optimized energy flow of tabless technology not only boosts tool performance but also helps extend overall battery lifespan. Integrated Bluetooth® connectivity adds smart functionality, automatically starting a paired Festool dust extractor when the cordless tool is switched on. When used with the Festool app, users can access detailed battery data including charge level, temperature, and charge cycles. Compact, powerful, and intelligent, the TBX 4 battery delivers advanced performance in a familiar form factor—and is fully backed by Festool’s 3-year warranty for complete peace of mind.

Features

• Maximum output when it counts. Advanced tabless cell technology delivers strong, consistent power—even for demanding applications—by improving energy flow and reducing internal resistance.
• Lightweight power for reduced fatigue. 4.0 Ah capacity delivers full power at just 1.3 lbs (600 g), helping reduce fatigue during extended use without sacrificing performance.
• Reliable performance in tough conditions. Tabless battery design maintains dependable output in both hot and cold environments, keeping tools ready across a wide range of jobsite conditions.
• Extended battery service life. Lower heat generation reduces stress on the cells, helping extend overall battery lifespan and maintain performance over time.
• Automatic dust extraction start. Bluetooth® connectivity automatically starts a paired Festool CLEANTEC dust extractor when the cordless tool is switched on.
• Faster recharge cycles. Low heat buildup allows the battery to be recharged immediately after use, minimizing downtime between tasks.
• Smart battery management. When used with the Festool app, Bluetooth® functionality provides access to detailed battery data including charge level, temperature, and charge cycles.
• Backed by Festool Service. Covered by Festool Service for stress-free ownership and long-term reliability.
• Rapid AIRSTREAM charging. When used with the AIRSTREAM SCA 16 quick charger, active cooling enables recharge times of approximately 25 minutes, getting the battery back to work faster.
• Clear charge status at a glance. Integrated LED indicators display the current charge level anytime, so you always know when you’re ready to work.
• Stable, tool-protective design. Soft-touch perimeter protects the tool and provides a secure resting surface, even on sloped or uneven work areas.

Includes

• (4) Tabless Battery BP 18 TBX 4 C-ASI
• TCL 6 DUO Rapid Charger
• SYS3 M 187